RGBa Opacity not working

I’m trying to set the background color of the News Bar (at the top of the page — e.g. The Latest) to an opacity of 0.65 while not impacting the text. To do this I created the below entry in my Custom CSS–unfortunately, it didn’t change the opacity of the background color. Am I doing something wrong with this? The News Bar is a Widget where I had to set the color as well (same color–#1F5D3E). I originally tried Opacity: 0.65 in the CSS, but as it is designed to do, it changes the text opacity as well. So trying to use RGBa instead. Any assistance would really be appreciated.

#jbar-container {
background: rgba(78, 233, 157, 0.65);
}

The page I need help with: [log in to see the link]